Sixteen years after a murder that stunned Suffolk County, Thursday was sentencing day for the convicted killer. The victim was a 17-year-old homecoming queen. Prosecutors said she was stabbed dozens of times in a jealous rage.

Benjamin Achampong, 30, is accused of using his former position at the Long Island Head Injury Association to access the Social Security numbers and other information of more than 50 victims, officials said.

The Suffolk County district attorney said Brian Andersen “purchased and possessed a number of illegal weapons including illegal machine guns, unregistered automatic and semi-automatic handguns and a stolen firearm.”